One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,6)(7,8)(9,10,13,12)(11,15,16,14)(17,18,20,23)(19,22,24,21)(25,26,29,31)(27,32,30,28)(1,2,4,6)(3,5,7,8)(9,11)(10,14)(12,15)(13,16)(17,19)(18,21)(20,24)(22,23)(25,27,29,30)(26,28,31,32)(3,7)(5,8)(11,16)(14,15)(17,19,20,24)(18,22,23,21)(25,27)(26,28)(29,30)(31,32)(1,2)(3,5)(4,6)(7,8)(9,12,13,10)(11,14,16,15)(17,18)(19,22)(20,23)(21,24)(1,3,4,7)(2,5,6,8)(9,11)(10,15)(12,14)(13,16)(17,19)(18,22)(20,24)(21,23)(25,28)(26,30)(27,31)(29,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.